(Found it myself!! engine had gone into reverse during touch and go)
If you get Garretts with Dowerty or MaCauly props into Beta in the air the aerodynamic force are sufficent to defeat the springs, so it won't go back into flight what ever the postion of the power levers. There is a "controller" changeover, in flight the prop pitch controller controls the rpm through the beta tube and the power levers control the fuel controller. Once you get into beta the Fuel controller controls RPM and the power levers control the pitch of the props.
There have been a few instances where they have presumed that is what has occured. The aircraft takes on the characteristics of a ships anchor.
But I don't think this occured in this instance because it would have just stopped in the air.